Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
  • C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
  • C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
  • C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D237/22—Nitrogen and oxygen atoms
• • A—HUMAN NECESSITIES
  • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
  • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
  • A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
  • A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
  • A01N43/58—1,2-Diazines; Hydrogenated 1,2-diazines
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
  • C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
  • C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
  • C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D237/14—Oxygen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
  • C07D237/02—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings
  • C07D237/06—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
  • C07D237/10—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D237/14—Oxygen atoms
  • C07D237/16—Two oxygen atoms

Definitions

• the present invention relates to new valuable substituted pyridazones, processes for their preparation, their use as herbicides and herbicides which contain these compounds as active compounds.
• 1-phenyl-4,5-dimethoxy-pyridazone (6) has a broad herbicidal action and can therefore be used as a total herbicide without sparing crop plants (DE-PS 11 97 676).
• the active ingredient has plant-damaging properties both when used before the plants emerge and when the leaves are treated.
• R 2 is a halogen atom (chlorine, bromine) or an alkoxy radical (methoxy) having 1 to 3 carbon atoms
• R ' is an amino, alkylamino, dialkylamino, alkoxyamino or alkylalkoxyamino group having 1 to 3 carbon atoms per alkyl or alkoxy radical , where the alkyl radicals can be the same or different, a halogen atom (chlorine, bromine), an alkoxy radical with 1 to 3 carbon atoms (methoxy), a trimethyleneimino radical or an amino group acylated by CIH 2 CC (O) or CH 3 COOCH 2 (O)
• X is a substituted phenoxy radical of the formula means, where R 3 , R 4 and R 5 are each independently hydrogen, halogen (chlorine, bromine), nitro, cyano, carboxyl, alkyl
• R 2 in the formula I can, for example, fluorine, chlorine, bromine, iodine, methoxy, ethoxy or propoxy and R 'can, for example, amino, methylamino, ethylamino, dimethylamino, diethylamino, methylethylamino, methoxyamino, methylmethoxyamino, chlorine, bromine, methoxy, ethoxy, Propoxy, CICH 2 C (0) NH, CH 3 COOCH Z C (O) NH or a trimethyleneimino radical.
• X can be, for example, a substituted phenoxy radical of the formula mean, where R 3 , R 4 and R 5 are each independently, for example, hydrogen, fluorine, Chlorine, bromine, iodine, nitro, cyano, carboxyl, methyl, ethyl, n-propyl, i-propyl, n-butyl, tert-butyl, trifluoromethyl, difluoromethyl, fluoromethyl, trichloromethyl, dichloromethyl, chloromethyl, difluorochloromethyl, methoxy, ethoxy , n-propyloxy, i-propyloxy, tert-butyloxy, trichloromethoxy, trifluoromethoxy, 1-chloroethoxy, 2-chloroethoxy, 1-fluoroethoxy, 2-fluoroethoxy, 2,2,2-trichloroethoxy, 2,2,2-trifluoroethoxy, 1,1,2,
• Y can mean, for example, hydrogen, fluorine, chlorine, bromine, iodine, cyan or nitro.
• Preferred compounds are those in which R 2 is, for example, chlorine, bromine or methoxy, R I is, for example, amino, methylamino, dimethylamino, methylmethoxyamino or methoxy, X is a phenoxy radical which is substituted, for example, by halogen or haloalkyl, in particular by chlorine and trifluoromethyl, in 3 or 4 Position of the phenyl radical and Y is hydrogen or nitro in the 6-position of the phenyl radical.
• the pyridazones of the formula I, where R 'is different from halogen can be prepared by reacting a dihalopyridazone of the formula II in which X and Y have the meanings given above and Hal is halogen, in particular chlorine or bromine, with the at least double stoichiometric amount of an amine of the formula III wherein R 3 or R 4 is hydrogen, alkyl having 1 to 3 carbon atoms or alkoxy having 1 to 3 carbon atoms, or with approximately the stoichiometric amount per halogen atom to be converted - depending on whether one or both halogen atoms is to be converted - an alcoholate of the formula IV in which M is a metal cation, in particular sodium or potassium, and R 5 is an alkyl radical having 1 to 3 carbon atoms (methyl), in the presence of an organic solvent at a temperature in the range between 20 and 150 ° C.
• the reaction is carried out continuously or discontinuously under pressure or under pressure ( 1 to 10 bar).
• the phenylhydrazines of the formula V required as starting materials can be prepared from the corresponding anilines of the formula VII by generally known methods in which X and Y have the meanings given above, are obtained in a customary manner by diazotization and subsequent reduction of the diazonium salt (Houben-Weyl, Methods of Organic Chemistry, Volume 10/2, p. 180, Georg-Thieme-Verlag, Stuttgart, 1967 ).
• the reaction to the corresponding pyrazone can be carried out, for example, without isolation of the hydrazines, but purer end products are obtained if the phenylhydrazines are isolated as hydrochlorides.
• anilines of the general formula VII can be prepared for 4-phenoxy-substituted derivatives by generally known methods (DE-OS 25 38 178, DE-OS 24 11 320), while the 3-phenoxy-substituted derivatives are known (Liebigs Ann Chem. 740, 169-179 (1970)) or can be prepared by the known method.
• a solution of 20 parts by weight of 1- [3 '- (2 "-chloro-4" -trifluoromethylphenoxy)] - phenyl-4,5-dichloropyridazone-6 in 300 parts by volume of glacial acetic acid is made with a mixture of 5.6 parts by weight HNO 3 (density 1.40) and 5.9 parts by weight conc. H 2 S0 4 nitrated at 0 ° C to 5 ° C. The mixture is stirred at 5 ° C. for 2 hours and 1,000 parts by weight of water are added. The precipitate is filtered off and the residue is recrystallized from diisopropyl ether.
• the herbicidal compositions are sprayed in such a way that the leaves of sensitive crop plants are not hit, if possible, while they are on the leaves of undesired plants or growing below them reach the uncovered floor area (post directed, lay-by).
• the herbicides according to the invention can also be used in a further large number of crop plants for eliminating undesired plant growth.
• the application rates can vary between 0.1 and 15 kg / ha and more.
• the new phenoxy-substituted pyridazones can be mixed with one another and with numerous representatives of other herbicidal or growth-regulating active ingredient groups and applied together.
• the application takes place e.g. B. in the form of directly sprayable solutions, powders, suspensions or dispersions, emulsions, oil dispersions, pastes, dusts, scattering agents, granules by spraying, atomizing, dusting, scattering or pouring.
• the application forms depend entirely on the purposes; in any case, they should ensure the finest possible distribution of the new active ingredients.
• Mineral oil fractions of medium to high boiling point such as kerosene or diesel oil, also coal tar oils etc., as well as oils of vegetable or animal origin, aliphatic, cyclic and aromatic hydrocarbons, for example benzene, toluene, are used to produce directly sprayable solutions, emulsions, pastes and oil dispersions.
• Xylene paraffin, tetrahydronaphthalene, alkylated naphthalenes or their derivatives, for example methanol, ethanol, propanol, butanol, chloroform, carbon tetrachloride, cyclohexanol, cyclohexanone, chlorobenzene, isophorone, etc., strongly polar solvents, e.g. B. dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, water, etc. into consideration.
• Aqueous application forms can be prepared from emulsion concentrates, pastes or wettable powders (wettable powders), oil dispersions by adding water.
• emulsions, pastes or oil dispersions the substances as such or dissolved in an oil or solvent can be homogenized in water by means of wetting agents, adhesives, dispersants or emulsifiers.
• concentrates which consist of an active substance, wetting agent, adhesive, dispersant or emulsifier and, if appropriate, solvent or oil and are suitable for dilution with water.
• Powders, materials for spreading and dusts can be prepared by mixing or grinding the active substances together with a solid carrier.
• Granules e.g. B. coating, impregnation and homogeneous granules can be prepared by binding the active ingredients to solid carriers.
• Solid carriers are e.g. B. mineral soils such as silicas, silicates, talc, kaolin, lime, bolus, loess, clay, dolomite, diatomaceous earth, calcium and magnesium sulfate, magnesium oxide, ground plastics, fertilizers, such as. B. ammonium sulfate, ammonium phosphate, ammonium nitrate, ureas and vegetable products such as flour, bark, wood and nutshell flour, cellulose powder and other solid carriers.
• 20 parts by weight of compound 2 are dissolved in a mixture consisting of 80 parts by weight of xylene, 10 parts by weight of the adduct of 8 to 10 mol of ethylene oxide and 1 mol of oleic acid-N-monoethanolamide, 5 parts by weight of calcium salt of dodecylbenzenesulfonic acid and 5 parts by weight of the adduct of 40 Mole of ethylene oxide to 1 mole of the adduct of 40 moles of ethylene oxide to 1 mole of castor oil.
• aqueous dispersion is obtained which contains 0.02% by weight of the active ingredient.
• active ingredient 1 20 parts by weight of active ingredient 1 are mixed well with 3 parts by weight of the sodium salt of diisobutylnaphthalene-a-sulfonic acid, 17 parts by weight of the sodium salt of lignosulfonic acid from a sulfite waste liquor and 60 parts by weight of powdered silica gel and ground in a hammer mill.
• a spray liquor is obtained which contains 0.1% by weight of the active ingredient.
• compound 3 30 percent by weight of compound 3 are intimately mixed with a mixture of 92 parts by weight of powdered silica gel and 8 parts by weight of paraffin oil which has been sprayed onto the surface of this silica gel. In this way, a preparation of the active ingredient with good adhesiveness is obtained.
• active ingredient 4 40 parts by weight of active ingredient 4 are intimately mixed with 10 parts of sodium salt of a phenolsulfonic acid-urea-formaldehyde condensate, 2 parts of silica gel and 48 parts of water. A stable aqueous dispersion is obtained. Dilution with 100,000 parts by weight of water gives an aqueous dispersion which contains 0.04% by weight of active ingredient.
• active ingredient 1 20 parts of active ingredient 1 are intimately mixed with 12 parts of calcium salt of dodecylbenzenesulfonic acid, 8 parts of fatty alcohol polyglycol ether, 2 parts of sodium salt of a phenolsulfonic acid-urea-formaldehyde condensate and 68 parts of a paraffinic mineral oil. A stable oily dispersion is obtained.
• the new compound No. 4 shows a better selective herbicidal activity than the known active ingredient A.
• the new active ingredient 88 shows a better selective herbicidal action than the known active ingredient B.
• the new active ingredient 88 shows a better selective herbicidal activity than the known active ingredient B.

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Life Sciences & Earth Sciences (AREA)
• Agronomy & Crop Science (AREA)
• Pest Control & Pesticides (AREA)
• Plant Pathology (AREA)
• Health & Medical Sciences (AREA)
• Engineering & Computer Science (AREA)
• Dentistry (AREA)
• General Health & Medical Sciences (AREA)
• Wood Science & Technology (AREA)
• Zoology (AREA)
• Environmental Sciences (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)
• Plural Heterocyclic Compounds (AREA)
• Pyridine Compounds (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

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• 1980
  • 1980-04-05 DE DE19803013267 patent/DE3013267A1/de not_active Withdrawn
• 1981
  • 1981-03-20 IL IL62450A patent/IL62450A/xx unknown
  • 1981-03-23 AT AT81102167T patent/ATE3861T1/de not_active IP Right Cessation
  • 1981-03-23 EP EP81102167A patent/EP0037925B1/de not_active Expired
  • 1981-03-23 DE DE8181102167T patent/DE3160461D1/de not_active Expired
  • 1981-03-25 CA CA000373862A patent/CA1152995A/en not_active Expired
  • 1981-03-25 JP JP4260081A patent/JPS56154465A/ja active Pending
  • 1981-03-26 BR BR8101807A patent/BR8101807A/pt unknown
  • 1981-03-26 US US06/247,784 patent/US4360672A/en not_active Expired - Fee Related
  • 1981-03-30 PL PL1981230429A patent/PL126256B2/xx unknown
  • 1981-03-31 DD DD81228775A patent/DD157752A5/de unknown
  • 1981-04-03 AU AU69074/81A patent/AU539238B2/en not_active Ceased
  • 1981-04-03 AR AR284858A patent/AR230271A1/es active
  • 1981-04-03 ZA ZA00812257A patent/ZA812257B/xx unknown
  • 1981-04-03 CS CS812524A patent/CS226426B2/cs unknown
  • 1981-04-03 DK DK153281A patent/DK153281A/da not_active IP Right Cessation
  • 1981-04-03 NZ NZ196728A patent/NZ196728A/xx unknown
  • 1981-04-03 HU HU81874A patent/HU188006B/hu not_active IP Right Cessation

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